Larynx Flashcards
green dot
lamina of the cricoid cartilage
green arrow
origin of cricothyroid muscle, external surface of cricoid arch
a weak, breathy voice is caused by damage to:
unilateral damage to inferior laryngeal nerve (which provides motor innveration to instrinsic muscles of the larynx)
lateral cricoarytenoid action
ADduction of of arytenoids
red dot
epiglottic cartilage
vocalis innervation
inferior laryngeal nerve
green arrow + blue shaded area combined is known as:
glottis
bue arrow
muscular process of the arytenoid cartilage
red arrow
laryngeal ventricle
red area
lateral cricoid ligament
blue shaded area
quadrangular membrane
green arrow
laryngeal prominence of the thyroid cartilage
(adam’s apple)
blue arrow
insertior of cricothyroid muscle, inferior thyroid lamina
blue area
rima glottidis
blood supply inferior to the glottis
inferior laryngeal vessels from inferior thyroid vessels
yellow arrow
cricotracheal ligament
red arrow
vocal process of arytenoid cartilage
blue arrow
insertion of arytenoids, contralateral arytenoid
green arrow
origin of the cricoarytenoid, cricoid arch
pink line
vestibular ligament
red arrow
origin of vocalis, vocal process of arytenoid
thryoarytenoid action
shortening (relaxing) of arytenoids
blue arrow
superior horn of the thyroid cartilage
what provides sensory innervation to the glottis and infraglottic cavity
inferior laryngeal nerve
(internal laryngeal provides sensory to supraglottic)
green arrow
stalk of the epiglottic cartilage
green arrow
origin of arytenoids, body of arytenoid
red arrow
vocal process of the arytenoid cartilages
red area
lateral cricoid ligament
blue arrow
external laryngeal nerve
the piriform recess is between:
the cricoid and thyroid cartilages (blue)
which intrinsic muscle of the larynx is responsible for shortening (relaxing) arytenoids
vocalis, thryoarytenoid
blue arrow
superior horn of the thyroid cartilage
lateral cricoarytenoid innervation
inferior laryngeal nerve
cough reflex sensory and motor
in on vagus (x), out on vagus (x)
blue dot
cricoid cartilage
blue area
rima glottidis
muscles that move the whole larynx:
suprahyoid (elevate)
infrahyoid (depress)
red dot
epiglottic cartilage
tracheostomy location and procedure
between upper tracheal rings, long term solution for air to airway
green dot
vestibule of larynx
the lateral cricoarytenoid ADducts the vocal cords by:
pulling anteriorly on muscular process
pink arrow
cricoarytenoid joint
green arrow
superior laryngeal nerve (branch of vagus CN X)
which intrinsic muscle of the larynx ABducts the arytenoids
posterior cricoarytenoid
red arrow
laryngeal ventricle
blue arrow
insertion of lateral cricoarytenoid, muscular process of arytenoid
green arrow
origin of the thyroarytenoid, thyroid lamina
cricothyrotomy location and procedure
at the medial cricothyroid ligament (below the vocal cords) in an emergency to restore air to airway
green dot
lamina of the cricoid cartilage
green shaded area
lamina of the thyroid cartilage